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习题练习:Physics Unit11: Vibrations and Waves

 作者: physics 发布日期: 2022-08-06 21:32   总分: 99分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月06日 21:32  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The time for one cycle of a u k6 instgf/) m9s86sxkb1b5rperiodic process is called the

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2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a periodic process, the number of cycles per unit time is called gply8w7;do suth2 , ,hthe

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3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For vibrational motion, the maximum displacement fromm 0vpo .3wfs-((b j3 lgsri:km the equilibrium point is calofpvs i (rlg.:km-jsb 0wm 33(led the

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4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. When the mass is at its maximum displyi yl5o 0k+ppn :v.6kwh4,hqvacement from equ:,64v+5y0vknhlpyi hq p.kowilibrium, its instantaneous velocity

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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM.by51efwd(z n2qo5*ss 3*uf un When the mass passes through the equilibrium position, its instantan f ozqds*nw(y5ub 1sne3f2 u5*eous velocity

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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SH- giods, is(9lf:gg ju5lg42f M. When the mass is at maximum displacement from equilibrium, its instantaneous ac9,l(ggsjs5ig2udl:f-4f goiceleration

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7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring and bobs up and down between poli ncz8/,4-ab dmm3cbv/ cx)fints A an,cci/b)d zx3mfbn-84/avc lmd B. Where is the mass located when its kinetic energy is a minimum?

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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spring 7z w2pc wr2zv 0jbtq07and bobs up and down between points A and B. Where is the mass lowc0qpv22jb tzr7w 0z7cated when its kinetic energy is a maximum?

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9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertica(e6d( ukbo2n1vg dw7 gl spring and bobs up and down between points A and B. Where is the mass2d( w1u( 6eo7nbggv kd located when its potential energy is a minimum?

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10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a vertical spou;y)-k vdn; tring and bobs up and down between points A and B. Where is the mass located when its potential energ)okud;v-yt n;y is a maximum?

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11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the amplitude of a vibrating mass-ang d98k r8n8dbd5d1t * 1rzkuldd-spring system produces what effect on the system's mechanicalbr d95 1u8 z*lkr8tdkn8g1ddd energy?

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12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the mass of a vibrating mass-aa+rmj rvp 297rvqp*/und-spring system produces what effect on the system's mechanvvpp+7r/qru2*9 jamrical energy?

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13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling only the spring constant of a vibrating mass-and-spring system produces;g7qfgykr stg d2/d 5l1ro:; a what ;t rgl gg:d /fo2q;7ar1dsk5y effect on the system's mechanical energy?

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14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass oscillates on the end z(hkym;- k *bi2hocwb an+ 6*p9n, selof a spring, both on Earth and on the Moon. Where i * -b cy(6bi ehsklpkawnn,9mo+2*;hzs the period the greatest?

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15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the spring constant k srb zn)hhqr 7 .fc1yc5v8n3a.of a mass-and-spring system causes what kind of change in the resonant frequency rcrhb17qc.zs3a5 f)ny.v8h nof the system? (Assume no change in the system's mass m.)

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16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the mass M of a mass-and-spring system causer y7q u x0;j3a)ncvkr5s what kind of change in the resonant frequency of the system? (Assume no change in thnq)y357 ruv c0;rxjka e system's spring constant k.)

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17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Increasing the amplitude of a mass l7tdl83l+x)p slgm6q -and-spring system causes what kind of change in the resonant frequency of the sys+g87q6 )3llmps x ldlttem? (Assume no other changes in the system.)

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18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass $m$ hanging on a spring has a natural frequency f. If the mass is increased to $4m$, what is the new natural frequency?

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19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists ofvqbcg:p:wsg5 o bm0:1zs ;cf * a mass M attached to a weightless string of length L. For this system, when undergoi;1vg 0b:zsfq:w p ocb:gms c5*ng small oscillations

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20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the mass of a simple pendulum is tripled, the time required for one comp oyj73z 2bw/eclete vizojcy27/3 eb wbration

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21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Both pendulum A and B are 3.0 m long. The period of Affdpgb5;r2h) is T. Pendulum A is twice as heavy as pendulum B. What is tbh2frf5dg p;)he period of B?

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22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  When the length of a simple pendulum is tripled, the ti2x /a yfy8+zxume for one complete vibration increasesxfzy+yu2x a/ 8 by a factor of

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23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What happens to a simple pendulum's frequency if both its length and mass)8 -0,eo s7ggtgc+vsq r)dino are increased + 0n) gre,sq-c i8vgdg)soot7?

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24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Simple pendulum A swings back and forth at twice the frequency of simple pe-j6uucu wwx*7t ( a5)f3p w a-dbal;vpgs9-rvndulum B. Which stat)g3 psrvp 9a lb7-aucuwx-(aw j5df* 6-ut;vwement is correct?

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25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If you take a given pendulum to the Moon, where the ac/ug urs. 5wtq,r1 oj,hceleration of gravity is less tursj qh t/g ,u1rwo5.,han on Earth, the resonant frequency of the pendulum will

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26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve A in Fig. 11-1 r njmygf9;js28pw7w/ lepresents


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27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve B in Fig. 11-1 rvcvq,li o 5 jndo30d0e2nso.n010l ntepresents


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28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Curve C in Fig. 11-1 represp 2kx/dz egy18/ds4 gyents


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29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a forced vibration, the amplitude of vibration is found to a x/xbg:w0i6 ldepend on the

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30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a wave, the maximum displacement of points of thebn jkb1zqep8/2xh i*r t/ymb:+)jq ; z wave from equilibrium is caller eb h1m+q 2jbzntk z)*qj/x/i 8b;yp:d the wave's

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31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The distance between successive crests on a wave is called the wav pi. vpg+xd1ab,( t2b+s0qwude's

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32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The number of crests of a wave passing a point per unit time is called themcpc3rqp0-k( k n(e (e wave'spke (-3e(kprqcm0c n(

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33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  For a wave, the frequency times the waveleni3k/fb ,a) lzlgth is the wave's

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34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The frequency of a wave increases. What happens ton (7*ple;tzc0 q hmp6o the distance between successive crests if the speed remains*htme7ocz pl 0q (6pn; constant?

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35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave moves on a string ,mtf7z/y8.k cieyg j* with wavelength l and frequency f. A second wave on the same string has wavelength 2l and travels with the same velocity. What is the freq8*7yyjm,g /. fkzticeuency of the second wave?

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36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a traveling wave on a string of length L, mass M, and tension4s4z(qjmt e9n T. A standing wave is set up. Which of t44zj e nqms9(the following is true?

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37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under di9:nkk z vjub,y2 8h.tension T. The speed of a wave in the string is v. What will be the speed of a wave in the sku.y2k n z9d:,8ibhv jtring if the mass of the string is increased to 2m, with no change in length?

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38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is under tension T. The speed of a wave in the sid cydqux/6 a4 wc;8q8tring is v. What uxw q8ycq 48iadd;c/6 will be the speed of a wave in the string if the length is increased to 2L, with no change in mass?

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39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of mass m and length L is xka )e dnw;q4ml774k / xgwqyqx h+e0(under tension T. The speed of a wave in the string is v. What will be the speed of a wave in the string if the tensi lqqkq;w/7 d xg+y 4 )mexn4(07kweaxhon is increased to 2T?

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40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the S wave u haeqn/vrktgj/6) *9 is a transverse wave. As an S wave travels through the Earth, the relative motion between the u/hgjq9enk *tv)/ra6 S wave and the particles is

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41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In seismology, the P wave is a longitudinal wave. As a P wave travels through t 4c;0epkl: tv + rqlzsdkc7+r0he Earth, the relativ;c + 0zl 0+rs4ep7tdkvr:k clqe motion between the P wave and the particles is

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42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The intensity of a w3t:g1 z,xm rb.rr3dbp7gxu s t l/z4-save is

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43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wave pulse traveling to the right along q6,2y0rc6ntr 9o, f5au zkxu ru/sc: ya thin cord reaches a discontinuity where the rope becomes thicker and heavier. What is the orientation of the reflected and transmittyf9q sya0rntuu o: rk,56ruc c/z,62xed pulses?

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44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses with equal positive amplitudes pass each other on a string,d:t*cksm,/ yrxkzihs z1y8 /95u;qoo one is traveling toward the right and the other toward tst z5;y1szy:ri,*9/xhuc 8k qdomko/he left. At the point that they occupy the same region of space at the same time

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45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two wave pulses pass each other on a string. Tzhop,( )2iyux;d l/qahe one traveling toward the right has a positive amplitude, while the one 2, uao/lyhx) id(qpz ;traveling toward the left has an equal amplitude in the negative direction. At the point that they occupy the same region of space at the same time

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46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a system, such as 5 uad.az 5s5ae mk/3t.5imojb a string fixed at both ends, occurs when

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47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If one doubles the tension in a violin string, the fundamental f1xg lk9m4j 6 l0pou3hl8cmn t;requency of that sgx;t0lm 4c h 9lnk 6mu3l1o8jptring will increase by a factor of

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48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the spring constant of a sp ygk2ddato eux/*03 d,ring that stretches 2.00 cm when a mass of 0.600 kg is sd*ag2 eyo0/kt 3dxu,duspended from it?

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49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along a hortxe6knt5bsd1 3eii yxl m0 a+m:*ch26izontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the ampe1xid2 s+06ttnbe*i:6 am53yxl k ch mlitude?

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50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of spring constant 60 N/m along a horize 8t-jcqlh d./ontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back cjtq8/l-.ed hto its equilibrium position when it is oscillating. What is the period of oscillation?

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51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring of springmcr mk9me /v76 constant 60 N/m along a horizontal, frictionless surface. The spring is initially stretched by a force of 5.0 N on the mass and let go. It takes the mass 0.50 s to go back to its equilibrium position when it is oscillating. What is the v kemc6r/mm79frequency of oscillation?

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52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass on a spring undergoes SHM. It goes ti8oitb7fbrz577eu,trz0 v h , p(t3p shrough 10 complete oscillations in 5,p7htz3itie7 rt ,fbz8p u( 50srb7ov.0 s. What is the period?

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53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an idel3-)ljh /wbjbal spring of spring constant 20 N/m w3)w /bhj-jllbith an amplitude of 0.30 m. What is the kinetic energy of this vibrating mass when it is 0.30 m from its equilibrium position?

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54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring ch *krq/chh: 1ionstant 20 N/m along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium position. What is the tot*ihk:h ch1 /qral energy of the system?

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55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass undergoes SHM with amplitude of 4 cm. The energy is 83nh ,iwl /a*eg.0 J at this time. The mass is cut in half, and i,ngw3ael/ * hthe system is again set in motion with amplitude 4.0 cm. What is the energy of the system now?

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56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/m alc/2)-ffb:d ,s v placum +dgd-ong a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium pd:cvda/sc2f ,)m-u dp -f+bl gosition. What is the amplitude of vibration?

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57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.50-kg mass is attached to a spring of spring constant 20 N/zq97d dap.t7 m 8nqe/vm along a horizontal, frictionless surface. The object oscillates in simple harmonic motion and has a speed of 1.5 m/s at the equilibrium positionm .9p7e/ vdadqt78qnz . At what location are the kinetic energy and the potential energy the same?

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58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to the end of ,7p /vs 0vpuala horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. /vp7vp,ls a u0 What is the total mechanical energy of this system?

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59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is attached to jvim p9m+7vrv1nh/s0 the end of a horizontal spring of spring constant 50 N/m and set into simple harmonic motion with an amplitude of 0.10 m. What is the total mechanical env09 mvj1him r/svnp+ 7ergy of this system?

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60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass vibrates back and forth from the free end of an ideqvn 9 f/z.v733mlasw bal spring of spring constant 20.0 N/m with an amplitude of 0.250 m f79z3/wn3 vvm.qabsl. What is the maximum kinetic energy of this vibrating mass?

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61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The mass of a mass-and-spring system is displa5,tdhb3ay tl8m6gl85d ohg -qced 10 cm from its equilibrium position and released. A frequency of 4.0 Hzdml6g5l yo-qhh8 8,tt3dg ba5 is observed. What frequency would be observed if the mass had been displaced only 5.0 cm and then released?

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62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring consf6:jz2g1brx86 b ax mlte+ qx vc kd;3z3a.qv*tant 10 N/m. The object is displac;be f*gabq6v61cdx v8 2tjzq3lk:mxa 3z r+ x.ed by
5.1 cm from the equilibrium position and let go. What is the period of vibration?

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63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-kg object is attached to a spring of spring constant 10 N/4- 2+k;ef: yfzjswe sxm. The object is displefzx :j24f- sk;yw+ seaced by
5.1 cm from the equilibrium position and let go. What is the frequency of vibration?

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64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 2.0-kg mass is hung from a spring of spring constant 18 N/m, displaced .nfm gc2aj7. .eu5* zbt r:mkaslightly from its equilibrium position, and released. What is the frequency of its vibratio.b a:57 *m .gecujn mzf.akt2rn?

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65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass is attached to a spring. It ,g5d+4.2uvmzumnm i c oscillates at a frequency of 1.27 Hz when displaced a distance of 2.0 cm from equilibrium and released. What is the maxm 4ud5uz. cvg2im+n, mimum velocity attained by the mass?

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66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two masses, A and B, are attached to different springs. Mass A vib dc6orqxam9br ,c f;dq,+q ).mrates with amplitude of 8.0 cm at a frequency of 10 Hz and mass B vibrates with amplitude of 5.0 cm at a frequency of 16 Hz. How does the maximum speed of A compare to td; cdom,q)a9.mx + 6rb ,qfcrqhe maximum speed of B?

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67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the mass stret +k)kkdr6ftpqmcw02 ;ches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1w20k;rm pk+t kcfq6d) .0 cm down and released from rest. Calculate the period of oscillation.

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68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended on a spring. In equilibrium the m.z3 om66f3hfbfktib8 ass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 .i bh8ft6fzfb 3m 36okcm down and released from rest. Calculate the total energy of the system.

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69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 0.30-kg mass is suspended ontr(l jdjt0 33r/tz og2 a spring. In equilibrium the mass stretches the spring 2.0 cm downward. The mass is then pulled an additional distance of 1.0 cm down and zjrrd3t(/lto 0 g3t j2released from rest. Write down its equation of motion.

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70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys:+hxi or4 bx v7c6 y0h.g(insq the following position versus time equati.hyr6n v04si:ch ioq7g xx(+bon:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the amplitude of vibration?

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71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the following position versus time eques8fskq6 h0ns pdb87, c5cw8wation:0es 5d8ss8cq8wnk 7f ,b6cwp h
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the period of vibration?

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72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An object in simple harmonic motion obeys the following position versfmhj ww/8e o( 0v kmh/,gxn1*)cj:rszus time equatiorw ze x)g v8w/h1k/:0mfsmnh j (jc*o,n:
$y = 0.50 \; \sin (\pi/2 \times t)$. What is the maximum speed of the object?

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73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A mass attached to the free end of a spring exfdofv 17.+; wvjdyp;q u 2q*my5 ;rfguecutes simple harmonic motion acco yq1f ;7ffyj r dw.;*pqv;u2o dg+vm5urding to the equation $y = 0.50 \; \sin (18\pi \times t)$ where y is in meters and t is seconds. What is the period of vibration?

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74#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A 1.5-kg mass attached to spring wdyv08di; 3ins ith a force constant of 20.0 N/m oscillates on a horizontal, frictionless track. At t= 0, the mass is released from rest at x= 10.0 cm. (That is, the si3 d sd0nv;8yipring is stretched by 10.00 cm.)
(a) Determine the frequency of the oscillations.
(b) Determine the maximum speed of the mass. Where does the maximum speed occur?
(c) Determine the maximum acceleration of the mass. Where does the maximum acceleration occur?
(d) Determine the total energy of the oscillating system.
(e) Express the displacement as a function of time.
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75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum makes 12 complete swings in 8.0 s. 4hvuywd9gt:7 ow5 ls9 (a) What are its frequency and period on Eartvst7o9wyu59h gd w: l4h?

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76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 3.00-kg pendulum is 28.84 m long q-5 .tz nysl/eg5-yvt. What is its period on Earth?

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77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pendulum has a period of 2.0 s onvony1m6w00as;jc4 y r*9n 5 a3kkcgko Earth. What is its length?

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78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grarxfk3xdl,1, 4 ,ydd xn)1yjgindfather clock is 1.0 m long. What is its period on the Eardx,3dr1g ni j1dy,kx4x , yf)lth?

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79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The pendulum of a grandfather clock is 1.0 m long. What is its period on t2++qd1e .tc tb/gubgohe Moon where the acceleratiobu1d.2t/etq +go+ c gbn due to gravity is only $1.7 \; m/s^2$?

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80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple pendulum consists of a 0.25-kg spherical mass attached to a massle2q 8ekq ps*9r*mn9w gtkfo p56 3(knzpss string. When the mass is displaced slightly from its equilibrium position and released, the pendulum swings back and forth with a frequency of 2.0 Hz. What frequency would have resulted if a 0.5 p9rp2w sz9q q3*kknne p6(g*m5 k8oft0-kg mass (same diameter sphere) had been attached to the string instead?

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81#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A simple pendulum consisting of a 20-g mass has initial an42irhj8 k v+evgular displacement of 8.0e. It oscillates witj riv4v+hek 28h a period of 3.00 s.
(a) Determine the length of the pendulum.
(b) Does the period of the pendulum depend on the initial angular displacement?
(c) Does the period of the pendulum depend on the mass of the pendulum?
(d) Does the period of the pendulum depend on the length of the pendulum?
(e) Does the period of the pendulum depend on the acceleration due to gravity?
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82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a givenu-1- yi ycqgcs5q hhp (pdg153 time. The frequency of the wave is 120 Hz. What is the ampl1ych5 pcd1qg-gyhqp u53s i(-itude?


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83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave at a giveoo+;rb0 4t(ib ; 77pm msh1kwlqmk ka6n time. The frequency of the wave is 120 Hz. What qwm pk kb6 (0is7o;rl;tkbaho4 m1 m7+is the wavelength?


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84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Figure 11-2 is a "snapshot" of a wave a4z x9ivx,p.6l8ur4i/d b zzmt t a given time. The frequency of the wave is 120 Hz. Whabz4,zm vl pd 9.ui t/z8xxr4i6t is the wave speed?


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85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a wave which has a perio8bfq+57fpo (p3ou i ukd of 6.00 ms?

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86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the period of a wave with w;zp)z p p f8,ngtswt/xxy +:0a frequency of 1500 Hz?

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87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the wave speed ixu0tf14)qcj)- o s sycf a wave has a frequency of 12 Hz and a wavelength of 3.fy))ccj ss4ux-1ot q00 m?

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88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the velocity of a /z(jcgj7-sl :rn,q) d,xn fwv6(meg p wave that has a wavelength of 3.0 m and a frequency of 12 Hz?,n(s j7d6g,q mrlgxzv:-wefp/(njc )

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89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the frequency of a 2.5 m wave travel,yiw4r+5jle k ing at 1400 m/s?

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90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piano string of linear mass density 0.0050 kg/m is under a tension l33uhyo f(tam857wm rof 1350 N. What is thhw mrut a7f3m3(o8ly5e wave speed?

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91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 6.0 g/m is under a tension of 180 N. What8: w0q 8w0jqs hnpog6k is the velocity of 8q 0w ghpoqnksw806:jpropagation of transverse waves along the string?

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92#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A wave whose wavelength is 0.500 m is traveling down a 500 m 7abf 98hj,xdvm1*ga nlong wire whose total mass is97am,gdv*1 8abjh nf x
25.0 kg. The wire is under a tension of 2000 N.
(a) Determine the velocity of the wave on the wire.
(b) Determine the frequency of this wave.
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93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The velocity of propagation of a transverse wave 9upc be n*v5dr++1:t vr t4zqamm,p+uon a 2.0-m long string fixed at both ends is 200 m/s. Which one of t9,4duatr: zum tc5*+pr+bvp+ vmqne 1he following is not a resonant frequency of this string?

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94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a guitar string has a fund75)mlf3gduutyz2t (7z( q dsw amental frequency of 500 Hz, which one of the following frequencies can set thwl2gyzu(d 73u5d(ts)zm7 qtfe string into resonant vibration?

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95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A stretched string is obse0ai g7gyul73drved to have four equal segments in a standing wave driven at a frequency of 480 Hz. What driving frequency will set up a standing wave with five e3gaud iy7 70glqual segments?

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96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string, fixed at bq j* 467fegu(,ppgy j8oh9bw eoth ends, vibrates at a frequency of 12 Hz with a standing transverse wave pattern containing 3 loops. What frequfu yq*j j, g4ghpweeb 6(o897pency is needed if the standing wave pattern is to contain 4 loops?

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97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A string of linear density 1.5 g/m is under a tension of 20 No4ngag1oyk(s :+ el6f. What should its length4o(s g6 gna:lyeko f+1 be if its fundamental resonance frequency is 220 Hz?

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98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Find the first three harmonics of a string of linear mass density 2.00 6 gzoeamv / ;5v2) luoxozv-x+g/m and length 0.6)oxoxum zg6+oz v2l/a;5ve-v 00 m when it is subjected to tension of 50.0 N.

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99#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
A string of length 2.5 m is fixed at both ends. When the strm-*ud+ i9g:f(wfn sea,wjjf xlfe.:. ing vibrates at a frequency of 85 Hz, a standing wave with five loops is f(x n-,jg la+.wjffmu*fds .f 9ewi:e:ormed.
(a) Determine the distance between two adjacent nodes.
(b) Determine the wavelength of the waves that travel on the string.
(c) Determine the velocity of waves.
(d) Determine the fundamental frequency of this string.
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